electromagnetic force

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

n. The fundamental force that is associated with electric and magnetic fields and is responsible for atomic structure, chemical reactions, the attractive and repulsive forces associated with electrical charge and magnetism, and all other electromagnetic phenomena. It is carried by the photon.

from Wiktionary, Creative Commons Attribution/Share-Alike License

n. A long-range fundamental force that acts between charged bodies, mediated by the exchange of photons.